Counties that impose a documentary transfer tax may require that any deed or other conveyance state on its face the assessor’s parcel number of the property being transferred However, this decision holds, that the parcel number cannot create an ambiguity as to the bounds of the property being conveyed if the deed otherwise fully describes the conveyed property. The parcel number might be admissible as extrinsic evidence to explain an ambiguity that appears in the deed’s description, but the parcel number alone cannot create such an ambiguity.